Improved evaporator for saccharine liquids



J. H. HARTWELL.

Evaportor f or Saccharne luices.

Patented March 17, 1863.

...Wy/- wmmm.. il l l 1 vNiTED STATES J AMES H. I'IAItTVELL, OFJEFFERSON COUNTY, INDIANA.

IMPROVED EVAPORATOR FOR SACCHARl-NE LIQUIDS.

Specification forming part of Letters Patent No. 37,91 l, dated March17, 1863.

To'all whom it may concern:

Be it known that I, J AMES H. HAETWELL, of the county of Jefferson andState of Indiana, have invented a new and useful improvement on Coolessugarevaporator used for manufacturing sugar and molasses out of thejuice of the Chinese sugar-cane; andI dohereby declare that thefollowing is a full, clear, and eXect description of the constructionand operation of the same, reference being had to the annexed drawings,making a part of this speciilcation, in which- Figure l is a perspectiveview of the entire machine, and Fig. 2 a perspective View of the furnaceattached.

In Fig. 2, letter A represents the fireplace; I3 B2, the fines under theboiling-pan; D,l the partition-wall between the two iiues B B`; C, theline connecting the two iiues B B2, situated at the back part of thefurnace, and Ethe chimney.

In Fig. l, let-ter F represents the entire boiling-pan; e, the strainerthrough which the juice is admitted into the pan, and letters f g/m'jklmaopq r s t a o w .fr ythe several ledges running through the pan,forming the diiierent longitudinal and transverse currents.

The tire is kindled and maintained in the furnace at letter A. The heatand smoke pass under the part of the pan which is divided by ledges, soas to form transverse longitudinal currents along the iiue B to iiue C,through ilue C to i'lue B2, and thence through the chimney E. The juiceof the cane is admitted into the pan through the sieve or strainer cinto the canal formed by the side of the pan and ledge f, down thatcanal to the end ofthe pan immediately over the Ere-place, thencethrough the duct formed by the end of the pan and the termination ofledge f into the canal formed by ledges f and g, thence up said canal tothe other end of the pan, thence through a duct similarly formed, asbefore, by the termination of ledge g and the end of the pan into thecanal formed by ledges g and h, down said canal to the end ot' the panimmediately over the tire-place, then through a duct to canal formed byledges It and t' to the back part of the pan, and communicates with thetransverse current formed by end of pan j and ledge lic, and thusthrough all the transverse canals formed by ledges 7c, Z, m, a, o, p,

q, r, s, t, u, c, w, fr, and y to a cock at outside corner of pan.

My invention has the following advantages over Cooks evaporator and allothers known to me, viz:

First. By the strainer c, Fig. 1, made of iine wire or cloth, I excludeall extraneous substances from the pan and prevent the accumulation ofthat iine starchy substance incident to manufacturing by all otherevaporators.

Second. In Oooks evaporator and all others known to me, the furnacebeing but about eight feet long, the greatest degree oi` heat is appliedwhere the thickened sirup is boiling, thereby endangering it to burningor scorching-pan I have a strong heat applied while passing through thelongitudinal canals and through the first few of the transverse canals,and by this time the sirup begins to thicken and to require a moderateheat, and by the admirable arrangement of my furnace by this time theheat begins to be somewhat exhausted and most admirably adapted to thecondition of the sirup' above, and by this means I can boil the sirupuntil it becomes very thick without the least danger of burning.

Third. By means ot' my transverse dues I exhaust a great amount ofheatin the manufacture of sugar and molasses that by all Vother methodsof evaporation escapes up the chimney, thereby saving about one-third ofthe fuel necessary for other evaporators.

In my system of evaporation I use the same system of continuous movingcurrent-s used by Cook and others in their evaporators, and for which Ido not claim originality.

The bottom of my pan and ledges is formed of galvanized iron, and thefurnace of any good building material.

The iiow is regulated by the admissionof a greater or less quantity ofthe juice through the sieve, according to circumstances, as in otherevaporators formed on this system.

The ledges in my pan are ten inches high, which prevents the sirup fromboiling over from one canal to another.

IIaving thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is-

l. The divided pan F, in combination with lng. By my partition of thefurnace and boilit furnace, also divided, as shown, both ztrdouble pan Fand divided furnace, the Whole ranged and operating substantially asdeto forni an improved evaporator, as' und for scribed, and for thepurpose set forth. the purpose described.

2. The pan F, composed of a longitudinally JAMES H. I-IARTVELL. and aJhorizontally divided portion, for the purpose set forth.

3. The strainer E, in combination with the Vitnesses:

A. D. MATTHEWS, ANTON HoAG.

